N.W.A. recomendations please.

I haven't listened to much hip-hop or rap before, but I'm slowly starting to like it. I've listened to some swedish groups (Sedlighetsroteln, Looptroop and such) and very little House of Pain and Cypres Hill (and of course a lot of Beastie Boys) but very few other bands.
Today I was at a friends house and he put on the NWA record Niggaz4Life. Despite the sexist lyics I thought it was really good.
What do you think should be the first NWA record to buy and what other records do you recomend for the average newbe hip-hop consumer.

While I am a hip hop enthusiast, I am not very versed in NWA material. however I can still recommend a great deal of Rap that you would be sure to love. or my names not Wrong ****ing Robot.
at any rate....If I were you I'd check out Hieroglyphics-3rd eye vision
Blackalicious- anything from him is great
Gang Starr - moment of truth
jurassic 5 - Quality Control
Del(from hieroglyphics) - Both sides of the brain
eazy e(this guy is classic...he's from NWA) - Straight of the streets of mutha ****ing compton
and for your posterity
the godfather of rap as we know it
Kurtis Blow

Lotta good rap being mentioned in this thread!
Like the first reply mentioned Straight Outta Compton is the classic NWA album with all fiive guys.
Personally I'm a massive Dre/G Funk fan so with that I can only recommend the G funk album and my favourite rap album ever.
Dr. Dre - The Chronic The Rap Album. Nothing comes close to this in my opinion. If you wanna see where Dre (and the rest of hip hop) went after the NWA days this is what you need

I want to point out a related album here, but one that has some significant differences, as well: The D.O.C.'s "No One Can Do It Better." The D.O.C. was a writer and performer on both N.W.A.'s seminal "Straight Outta Compton" and Eazy E's debut solo album, "Eazy-Duz-It." Dr. Dre produced the album, and The D.O.C.'s delivery and lyrical content very much represents his East Coast heroes. While it doesn't make it onto the radar as much as it should, it is considered a masterpiece by those who do know it.

Just to toss it in there, if you venture in to G Funk, you might have a look at some of DJ Quik's albums, specifically "Safe & Sound" and "Rhythm-al-ism." That's not to count out the two major label releases he had before, "Quik Is the Name" and "Way 2 Fonky," it's just that they weren't G Funk. Also, if you find you like G Funk, you may also want to look into a related sub-genre, Mobb Music (which subsequently leads into Hyphy), with artists like E-40, Too $hort, Dru Down and Spice 1.

One more thing, if you want to look at something more modern, I'll put my stamp of approval on Rhymefest.